Easy
1 point
ID: #26278
Question
x+y = 17, xy = 60 হলে x-y =?
Options
1
7
Correct Answer
2
8
Correct Answer
3
9
Correct Answer
4
10
Correct Answer
Explanation
আমরা জানি, (x-y)² = (x+y)² - 4xy। মান বসালে পাই, (x-y)² = (17)² - 4×60 = 289 - 240 = 49। সুতরাং, x-y = √49 = 7।
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Type
Single Choice
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